You can pass a url fragment argument like
Window.Location.replace(GWT.getHostPageBaseURL() + "#error=Something bad
happened");
and then in your login page you have to check for url fragments (after #).
Similarly if you don't want to pollute your urls you can
- set a cookie
- use sessionStorage
- use localStorage
to communicate the error state to the new page.
Hope that helps
Vassilis
On Sat, Dec 17, 2016 at 12:22 AM, Olar Andrei <[email protected]> wrote:
> Hello,
>
> I have this small example. I am on the user page. In the constructor the
> UserInfo object is set. If something happens I want to redirect back to the
> login page, which I do like in the example below. Is there a possibility to
> display a message back on the login page like "An error eccurred bla bla
> bla. Please log in again." ?
>
> Thanks in advance.
>
> public UserPanel() {
> setUserInfo();
>
> if (userInfo == null) {
> Window.Location.replace(GWT.getHostPageBaseURL());
> }
>
> container = new MaterialContainer();
> container.setFontSize("1em");
>
> Widget mainMenu = createMenu();
> initWidget(mainMenu);
> }
>
>
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Vassilis Virvilis
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